I'm doing a top end on the little tractor and am wondering about bore clearance and your opinion.
I had a little rear barrel scoreing which was cleaned up. Sent out to a proper verticle hone in a heavy duty diesel machine shop. I like these guys and they like my antique american motorcycle projects. Fast and good service, next day turn. 30 degree crosshatch.
They also did an amazing job of closeing up a crack in my barrel - typical intake crack to bore. They hand peened it closed and with the sleeve it's held and looks solid. Old world craftsmanship. Love it! I could explain how to do it if your interested.
So just a ring job for me I figure and have hand lapped in the valves a bit to clean up. Have standard bore pistons. Will hand file end gap on +.010 rings.
Ok- so the mil manu says 0.003
I've been told that 0.005 is fine. Esp if your really dialing the thing up on a regular basis.
Can you run .002?
Nicholson's book says 0.0045
I still have the intake gas wash indent on the cycl. wall.
New pistons next season.
5.5:1 comp - flat head.
So what's your clearance opinion?
I had a little rear barrel scoreing which was cleaned up. Sent out to a proper verticle hone in a heavy duty diesel machine shop. I like these guys and they like my antique american motorcycle projects. Fast and good service, next day turn. 30 degree crosshatch.
They also did an amazing job of closeing up a crack in my barrel - typical intake crack to bore. They hand peened it closed and with the sleeve it's held and looks solid. Old world craftsmanship. Love it! I could explain how to do it if your interested.
So just a ring job for me I figure and have hand lapped in the valves a bit to clean up. Have standard bore pistons. Will hand file end gap on +.010 rings.
Ok- so the mil manu says 0.003
I've been told that 0.005 is fine. Esp if your really dialing the thing up on a regular basis.
Can you run .002?
Nicholson's book says 0.0045
I still have the intake gas wash indent on the cycl. wall.
New pistons next season.
5.5:1 comp - flat head.
So what's your clearance opinion?
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